@mixin border-1px($color){
	position: relative;
	&:after{
		display: block;
		position: absolute;
		left: 0;
		bottom: 0;
		width: 100%;
		border-top: 1px solid $color;
		content: ' ';
	}
}
@mixin border-none{
	&:after{
		display: none;
	}
}

@mixin bg-image($url){
	background-image: url($url+"@2x.png");
	@media (-webkit-min-device-pixel-radio: 3),(min-device-pixel-radio: 3){
		background-image: url($url+"@3x.png");
	}
}